Journée, M., Teschendorff, A. E., Absil, P.-A., & Sepulchre, R. (2007). Geometric optimization methods for independent component analysis applied on gene expression data. 2007 IEEE International Conference on Acoustics, Speech, and Signal Processing, p. IV-1413 - IV-1416. https://doi.org/10.1109/ICASSP.2007.367344